Ingredients
2 cups frozen peas (from a 10-ounce bag)
1 cup packed fresh parsley leaves
1/2 cup walnuts, toasted
2/3 cup grated Parmesan, plus more for serving
3 garlic cloves, smashed and peeled
1/3 cup extra-virgin olive oil
Coarse salt and ground pepper
12 ounces linguine
Preparation
Cook 1 cup peas according to package instructions. In a food processor, combine cooked peas, parsley, walnuts, Parmesan, garlic, and 1 tablespoon water. Pulse until a paste forms. With machine running, slowly add oil, processing until blended; season with salt and pepper.
In a large pot of boiling salted water, cook pasta according to package instructions, adding 1 cup peas 30 seconds before end of cooking. Reserve 1 cup pasta water; drain pasta and peas. Return pasta and peas to pot; toss with 3/4 cup pesto (reserve remainder for another use), adding enough pasta water to create a sauce that coats pasta. Serve pasta with more Parmesan.